add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

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# Locally computed:
sha256 734a1d5f21fb388bdbe64f7b599fef52357c3c72ff860f38456a352e7c1c3e78  dsp-tools-v2.0.tar.gz